marion



(No Model.) 2 Sheets-Sheet 1.

D. W. MARMON.'

ROLLER MILL.

No. 277,807. Patented May 8.1888.

En. l'l IIHFIIHWW (No Model.) Y 2 Sheets-Sheet Z. D. W.v MARMON.

ROLLER MILL.

No. 277,307. Patented May 8,1883.

W'ITJVSSES. u I Y l INVENTOR.

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NITED STATES PATENT Felon.

DANIEL WV. MARIVION, OF INDIANAPOLIS, INDIANA, ASSIGNOR TO THE NORDYKE 85 MARMON COMPANY, OF SAME PLACE.

ROLLER-MILL.

-SPECIFICATION forming part of Letters Patent No. 277,307, dated May 8, 1883.

Application filed February 27, 1883. (No modelJ To all whom/it may concern Be it known that I, DANIEL W. MARMON, of the'city of Indianapolis, county of Marion, and State of Indiana, have invented certain new and useful Improvements iu Roller-Mills,

. of which the following isa specification.

simultaneously.

This object is accomplished by combining with said counter-shaft and sliding Vor swing-.

ing boxes supporting the same means cousisting in part of toothed gearing for connecting and adjusting said boxes, as will be hereinafter more fully described. 4

This present application is intended to cover one class of the modifications or alternate constructions which were to some extent shown and described in my application No. 77,774, filed November 27, 1882.

Referring to the accompanying drawings, which are made a part hereof, and on which similar letters of reference indicate similar parts,Figure lis a perspectivey view of a rollermill embodying my said invention; Fig. 2, a central vertical section thereof; and Figs. 3 to 8, skeleton views, illustrating alternate constructions embodying the leading features ofV shafts.

my said present invention.

In said drawings, the portions marked A represent the frame-work vof the mill; B, one of the grinding-rolls; B' B2 B3 B4, the roll/- shafts '5 C, the counter shaft; D, journalboxes for said shaft; E, rods or bars extending from said boxes and forming part of the supporting', connecting, and adjusting mechanism ;A F, gear-wheels for operating said rods or bars; and G H l the belts, which are tightened or loosened by the lowering' or raising of the counter-shaft.

The frame-work A and many of the other parts of the machine may be of any ordinary or approved form, my present invention being equally as applicable to roller-mills of other forms as to that shown.

The several roll-shafts, B B2 B3 B4, are provided with belt-pulleys l1 b2 Z13 b4, and are each connected by a belt to the counter-shaft, as shown.

The counter-shaft C is mounted in the boxes D, and has pulleys c c2 c3 thereon. Vhe'u this shaft is raised. or lowered it loosens or tightens the several belts employed to run the grinding-rolls, which is occasionally necessary to the proper operation of the mill.

The boxes D are preferably provided with extensions cl, which pass through bearings in the lugs a! a2 on the frame A, and are adapted to slide therein.

The rods E are attached to the upper extensions of the boxes D, either by pivots e, as shown, or otherwise, and pass up through bearings in the frame A A', preferably to near the top of the machine, and are preferably formed at the upper ends into rack-bars.

The gear-wheels F are mounted either on the shaft F', as shown in the principal drawings, or otherwise, as shown in Figs. 3,4, 5, 6, 7 and S, and mesh into the rack-bar portions of the rods E, or the bars attachedjhereto, and are thus adapted to raise and lower said rods, and, through them, both ends of the countershaftGsimultaneously,and thusloosen ortighten the belts G H I, which is a very simple and convenientmeans for accom plishing this result.

The belt Gr passes over the pulleys b Z13 on the roll-shafts B' B3, and under the pulley c on the counter-shaft O,and thus drives all of said The belts H and I run from the pulleys c2 c3 on the counter-shaft tothe pulleys?)2 b4 on the roll-shafts B2 B4, and thus drive said roll-shafts.

As will be readily understood from an examination of the drawings, the rack or toothed portion may be in the form of a straight rack or a segment, and the teeth may be spur or screw teeth, and attached directly to or forni a` part of the bars or rods supporting the boxes, or be upon bars pivoted or otherwise attached thereto.

Having thus fully described my said inveu` tion, what I claim as new, and desire to secure by Letters Patent, is Y l. The combination,in aroller-mill,with the counter-shaft C, extending through the mill substantially parallel with the roll-shafts, of an adjusting mechanism-consisting of rods or bars supporting the boxes of said countershaft, and means embodying toothed gearing IOC) for connecting and simultaneously moving said rods or bars, substantially es described, und for the purposes speeied.

2. The combination, with the counter-shaft C andthe boxes or bearings therefor, of an adjusting mechanism consisting; of rods or bers supporting the said boxes, and having teeth thereon, pinions which engage With seid teeth, means for connecting seid pinions with each other, and means for operating the. Seme,Where by both ends of said counter-shaft are raised or lowered simultaneously, substantially esl described, and for the purposes specified.

3. In e roller-mill, the combination of the supporting framework, the rolls, the rollshafts, the counter-shaft, boxes or bearings therefor, the pulleys on said several shafts, the belts on said pulleys, the rods E, connected to the boxes of the counter-shaft, means for connecting said rods together, and toothed gearzo In testimony whereof Ihave hereunto set my 25 hand vzuid seal, at Indianapolis, Indiana, this 24th dey of February, D. 1883.

DANIEL W. MARlYION. [L. 8.]

In presence o1"- G. BRADFORD, E. W. BRADFORD. 

